Gaertneria bipinnatifida var. dubia A.Gray Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Ambrosia species Ambrosia chamissonis Name Homonyms Gaertneria bipinnatifida var. dubia A.Heller Gaertneria bipinnatifida var. dubia A.Gray